2015 Mazda 6 Is Leaking Oil

Identifying the Causes of Oil Leaks in Your 2015 Mazda 6 and How to Fix Them Effectively

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Reviewed by
Aisha
Written by RepairPal Car Genius
Updated January 14, 2025
0%
80% chance it's the
Oil System Components
0%
20% chance it's the
Engine Gaskets
The most common reasons a 2015 Mazda 6 is leaking oil are oil system component failure and leaking engine gaskets.
  • Oil System Components: A worn or damaged oil pump or filter can lead to low oil pressure, resulting in inadequate lubrication and potential engine damage.
  • Engine Gaskets: A worn or damaged engine gasket can lead to oil or coolant leaks, resulting in engine overheating or loss of lubrication.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2015 Mazda 6 is leaking oil?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

Oil pans don't wear out or break like other parts, they generally only need to be replaced because of external damage from an accident or an improperly tightened drain plug. The main symptom you will experience is an oil leak underneath the engine of your car. The oil that leaks from a damaged oil pan will range from dark brown to dark black. If the leak is large enough or occurs for long enough the oil level will be low enough to turn the oil pressure or low oil level warning light on.

The engine oil pressure warning light will come on if the engine oil pressure is low, or if the oil pressure sensor is faulty. In either case, engine power may be reduced significantly. The check engine light may also illuminate, and an on-board diagnostic (OBD) trouble code will be stored in the vehicle's computer.

What are the initial steps to diagnose the oil leak in a 2015 Mazda 6?

To effectively diagnose an oil leak in your 2015 Mazda 6, begin by locating the source of the leak, which often involves inspecting the area beneath the vehicle for any visible oil spots. Once you have a general idea of where the leak might be coming from, turn your attention to the engine components. Carefully examine the oil filter, oil pan, valve cover gasket, and oil drain plug for any signs of oil seepage or damage. It’s also crucial to check the oil level in the engine; a significant drop may indicate a leak. Pay special attention to the oil filter, as a faulty one can frequently be the culprit behind leaks. Additionally, inspect the oil pan for cracks or loose bolts, and assess the valve cover gasket for wear. By following this methodical approach, you can identify the source of the leak and determine the necessary repairs, ensuring your Mazda 6 remains in optimal condition.

What are the common causes of oil leaks in a 2015 Mazda 6?

When dealing with oil leaks in a 2015 Mazda 6, it's crucial to understand the common culprits that may be at play. One frequent issue is a worn or damaged oil pan gasket, which can deteriorate over time and lead to significant leaks. Similarly, the valve cover gasket is another area that can wear out, allowing oil to escape from the engine. Additionally, a faulty oil filter housing gasket can contribute to leaks, as can the rear main seal, which is often a less visible but critical source of oil loss. Lastly, problems with the oil cooler seals can also result in leaks. Addressing these issues promptly is essential to prevent further engine damage and maintain optimal vehicle performance. Regular inspections and maintenance can help you catch these problems early, ensuring your Mazda 6 runs smoothly and efficiently.

How urgent is it to address the oil leak in my 2015 Mazda 6 to prevent potential engine damage?

Addressing an oil leak in your 2015 Mazda 6 is not just a matter of routine maintenance; it is an urgent necessity to safeguard your engine's health. Oil is vital for lubricating engine components, and a leak can lead to dangerously low oil levels, increasing friction and heat within the engine. This can result in severe damage over time, including overheating and accelerated wear on critical parts. The severity of the leak can vary, but even minor leaks can compromise gaskets and seals, leading to more extensive repairs if left unattended. Additionally, an oil leak can negatively impact your vehicle's performance and fuel efficiency, causing a decline in power output and overall functionality. Therefore, it is crucial to inspect and repair any oil leaks promptly to prevent costly engine damage and ensure the longevity of your Mazda 6. Ignoring this issue could lead to significant safety risks and long-term consequences for your vehicle's performance.

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